Home / 758,806.20-1,138,209.30-380,892.60

Finding the Fourth Proportional to 758,806.20, 1,138,209.30 and 380,892.60

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Solution

The fourth proportional to 758,806.20, 1,138,209.30 and 380,892.60 is: 571,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,806.20 : 1,138,209.30 = 380,892.60 : x
  2. Step 2: Convert to fraction form
    758,806.20/1,138,209.30 = 380,892.60/x
  3. Step 3: Cross multiply
    758,806.20x = 1,138,209.30 × 380,892.60
  4. Step 4: Simplify right side
    758,806.20x = 433,535,499,621.18
  5. Step 5: Solve for x
    x = 433,535,499,621.18/758,806.20
  6. Step 6: Final answer
    x = 571,338.90

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.